Arrangement for the stable connection of two domestic machines stacked one above the other

Abstract: An arrangement for the stable connection of two home appliances stacked one above the other, particularly a washing machine (10) and a drier (20), comprises two vertically displaceable supporting feet (21) provided with vertical recesses and fixed to the bottom of the upper appliance, and two vertically protruding connection elements (30), fixed to the worktop of the lower appliance, which are adapted to be introduced into the recesses of supporting feet (21) when the two appliances are stacked one above the other.

Description: The invention relates to an arrangement for the stable connection of two domestic machines stacked one above the other, more especially a washing machine and a drier to form a washer-cum-drier stack, the lower machine having an upper worktop and the attached machine having vertically displaceable supporting feet. Various arrangements of this type are known, but they require a considerable number of component parts and considerable assembly work. Thus, DE 33 29 615 A1 discloses an arrangement, wherein means for receiving the supporting feet of the upper machine are secured in bores in the worktop of the lower machine, some of the receiving means receiving the facing supporting foot vertically, while the supporting feet have to be introduced horizontally for the remaining receiving means. If the machines wobble, these receiving means do not fully ensure that the upper machine remains connected to the lower machine. DE 38 27 789 A1 and DE 38 27 790 C2 disclose arrangements, wherein four Z-shaped mounting brackets are connected to the worktop of the lower machine. The base plates of the supporting feet are introduced into these mounting brackets, so that the mounting brackets are firmly screwed in position when the supporting feet are screwed into the frame or into an end plate of the upper machine. The junction point between the lower machine and the upper machine is covered by means of attachable screens. However, the number of component parts and the assembly work for connecting the machines which are stacked one above the other are considerable in such case and require adaptations, at least to the lower machine, for an upper machine to he selectively mounted thereon. DE-GM 19 07 416 also discloses a firm screw-connection for the machines which are to be stacked one above the other. In such case, an intermediate frame is used, which has threaded screws, which protrude upwardly and downwardly and are introduced into bores in the machine frames. The intermediate frame is securedly connected to the two machines by means of nuts which have been screwed thereon. This type of connection is absolutely stable, but it requires a complicated intermediate frame, since the latter has to provide access to the connection points. Furthermore, the machine frames which face one another have to be provided with the appropriate receiving means for receiving the threaded screws of the intermediate frame. It is an object of the invention to provide an arrangement of the initially mentioned type, which produces a stable connection between the two machines, which are stacked one above the other, by means of simple and easily mountable component parts. This object is achieved, according to the invention, in that the supporting feet are provided with a vertical recess, in that at least two vertically protruding connection elements are connectable and connected to the worktop of the lower machine, and in that the connection elements are introduced into the recesses of supporting feet when the machines are aligned with each other and stacked one above the other. The hollow supporting feet provide a long length for engagement with the inserted connection elements and, in consequence, provide completely adequate stability. Two connection elements are sufficient here, which are so connected to the worktop of the lower machine that they are introduced into the recesses in the facing supporting feet of the upper machine when the machines are aligned with each other. The configuration is preferably such that the two rear supporting feet of the attached machine each have associated therewith a connection element on the worktop of the lower machine. The stability is further improved, according to one embodiment, in that the connection elements are introduced in a form-locking manner into the recesses in the supporting feet, which recesses are preferably continuous. The attachment of the connection elements to the worktop of the lower machine is facilitated, in that the connection elements facing the lower machine are terminated by a mounting plate, which is connectable to the worktop of the lower machine. If, according to one embodiment, the mounting plate is connectable to the worktop of the lower machine by means of a double-sided adhesive tape, the lower machine can have a completely sealed worktop, i.e. any washing machine or any automatic washing machine may be used for the washer-cum-drier stack. The same also applies to the drier, since the latter may be provided, if necessary, with appropriate supporting feet. An additional securement for ensuring stability can be achieved, in that the supporting feet are terminated by an hexagonal adjusting means, and in that the mounting plate for the connection elements is provided with a stop spring which engages behind the hexagonal adjusting means of the associated supporting foot when the connection element is inserted. The number of component parts required for the arrangement is kept very small, in that the connection element is configured as a one-piece plastics material injection moulded component part with the mounting plate and possibly with the stop spring. In addition, these plastics material injection moulded component parts are recyclable. The invention is explained more fully with reference to one embodiment illustrated in the drawing. In the drawing: Fig. 1 is a schematic, perspective front elevational view of the domestic machines, which are to be stacked one above the other and have the stability achieved according to the invention; and Fig. 2 is a view, on an enlarged scale, of a supporting foot having the connection element adapted thereto. For a washer-cum-drier stack, a washing machine or an automatic washing machine is installed as the lower machine 10. The upper machine 20 is configured as a drier and has four supporting feet 21, which are vertically displaceable. In the embodiment, two connection elements 30 are provided on the worktop 11 of the lower machine 10, said connection elements protruding vertically upwardly and being aligned with the two rear supporting feet 21 of the upper machine 20. So that these connection elements 30 can be introduced into the supporting feet 21, said supporting feet are provided with recesses 22, which are preferably continuous, as Fig. 2 illustrates. The connection elements 30 facing the lower machine 10 are provided with a mounting plate 31, which is connected to the worktop 11 of the lower machine 10. A type of connection which has proved to be very advantageous is one which provides a double-sided adhesive tape 32 on the connection side of the mounting plate 31. After the protective film has been removed, the mounting plate 31 of the connection element 30 can be adhered to the worktop 11 very easily. Since the pin-like connection element 30 is long enough for engagement with the recess 22 in the supporting foot 21, good stability is achieved, and such is further improved, in that the connection element 30 is introduced in a form-locking manner into the recess 22 in the supporting foot 21. The connection element 30 may also, of course, be secured to the worktop 11 in a different manner, and four connection elements 30 may also be introduced into the four supporting feet 21 of the upper machine 20 without the stability being adversely affected. The engagement connection between the connection element 30 and the supporting foot 21 may additionally be ensured when the mounting plate 31 is provided with a stop spring 33, which engages behind the hexagonal adjusting means 23 of the supporting foot 21 after the connection element 30 has been introduced into said foot. This locking connection can also be released again by deflecting the stop spring 33 when the upper machine 20 needs to be removed. The connection element 30 may be configured and produced as a one-piece plastics material injection moulded component part with the mounting plate 31 and possibly with the stop spring 33 and constitutes a recyclable connection member.

Claims: Arrangement for the stable connection of two domestic machines stacked one above the other, more especially a washing machine and a drier to form a washer-cum-drier stack, the lower machine having an upper worktop and the attached machine having vertically displaceable supporting feet, characterised in that the supporting feet (21) are provided with a vertical recess (22), in that at least two vertically protruding connection elements (30) are connectable and connected to the worktop (11) of the lower machine (10), and in that the connection elements (30) are introduced into the recesses (22) of supporting feet (21) when the machines (10, 20) are aligned with each other and stacked one above the other. Arrangement according to claim 1, characterised in that the two rear supporting feet (21) of the attached machine (20) each have associated therewith a connection element (30) on the worktop (11) of the lower machine (10). Arrangement according to claim 1 or 2, characterised in that the connection elements (30) are introduced in a form-locking manner into the recesses (22) in the supporting feet (21), which recesses are preferably continuous. Arrangement according to one of claims 1 to 3, characterised in that the connection elements (30) facing the lower machine (10) are terminated by a mounting plate (31), which is connectable to the worktop (11) of the lower machine (10). Arrangement according to claim 4, characterised in that the mounting plate (31) is connectable to the worktop (11) of the lower machine (10) by means of a double-sided adhesive tape (32). Arrangement according to one of claims 3 to 5, characterised in that the supporting feet (21) are terminated by an hexagonal adjusting means (23), and in that the mounting plate (31) for the connection elements (30) is provided with a stop spring (33) which engages behind the hexagonal adjusting means (23) of the associated supporting foot (21) when the connection element (30) is inserted. Arrangement according to one of claims 3 to 6, characterised in that the connection element (30) is configured as a one-piece plastics material injection moulded component part with the mounting plate (31) and possibly with the stop spring (33).

Inventors: MICHAEL FRANK, MICHAEL, FRANK, MICHAEL, FRANK, C/O WHIRLPOOL ITALIA S.R.L.
Applicants: BAUKNECHT HAUSGERAETE, WHIRLPOOL EUROP, BAUKNECHT HAUSGERAETE GMBH, WHIRLPOOL EUROPE B.V.
Application year: 1994
Main classification: D06F29
IPC codes: D06F29, D06F39, F16M13